Add missing fields to the affected kubernetes package data_streams

[tetianakravchenko]

in elastic/beats#29133 was added configuration option for add_resource_metadata in kubernetes module, as a result node and namespace metadata are added to the Pod, container and service resources.

What must be added to the fields.yml:

• kubernetes.node.labels.*
• kubernetes.namespace_labels.*
• kubernetes.namespace_uid
• kubernetes.node.uid

Why it is important?
When the default version of stack will be 8.0 (8.1) tests will be failing for kubernetes package